segfault in av_buffer_unref when using Linphone 3.6.1

Description

(this is about ffmpeg 2.6.2 which isn't available in the version combobox)

I've switched from libav back to ffmpeg on an amd64 Gentoo Linux machine, rebuilt linphone and tried to connect to our corporate videoconferencing solution via a testing room is publicly available at sip:950087999@cesnet.cz. When I join a meeting with video, linphone segfaults shortly after the video window pops up (with a black stuff from the VC bridge, and an image of myself from a webcam at the corner).

I *think* that it was with libav-11.2 which I apparently installed on 2015-03-04, but that could be wrong. I remember it "always working", but I wasn't checking every month and I apparently don't have older logs from Portage.

Also what version of linphone and mediastreamer is this using ?

This (non-working) test is with Gentoo's linphone-3.6.1 and media-libs/mediastreamer-2.9.0-r1.

I *think* that it was with libav-11.2 which I apparently installed on 2015-03-04, but that could be wrong. I remember it "always working", but I wasn't checking every month and I apparently don't have older logs from Portage.

Also what version of linphone and mediastreamer is this using ?

This (non-working) test is with Gentoo's linphone-3.6.1 and media-libs/mediastreamer-2.9.0-r1.

Versions of mediastreamer before 2.11.0 are buggy and pass a uninitialized AVFrame into avcodec_decode_video2(), thats not correct for both FFmpeg and libav and both can crash as a result.
If one doesnt crash thats just luck that the uninitialized values happen not to cause a crash

So i suspect this bug is just that your mediastreamer is too old, iam closing it thus, but in case updating mediastreamer doesnt resolve it then please dont hesitate to reopen.